121031321021 has 8 divisors (see below), whose sum is σ = 131911802400. Its totient is φ = 110375179632.

The previous prime is 121031320961. The next prime is 121031321063. The reversal of 121031321021 is 120123130121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121031321021 - 2²⁶ = 120964212157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121031321321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56083871 + ... + 56086028.

It is an arithmetic number, because the mean of its divisors is an integer number (16488975300).

Almost surely, 2^121031321021 is an apocalyptic number.

It is an amenable number.

121031321021 is a deficient number, since it is larger than the sum of its proper divisors (10880481379).

121031321021 is a wasteful number, since it uses less digits than its factorization.

121031321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112169995.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121031321021 its reverse (120123130121), we get a palindrome (241154451142).

The spelling of 121031321021 in words is "one hundred twenty-one billion, thirty-one million, three hundred twenty-one thousand, twenty-one".